Don't recall if it was me involved in the tutorials you're referring to. I have written some tips here:
http://troypiggo.blogspot.com/2010/0...-to-share.html
but as you can see down the bottom, there's some more things I'd like to post about but haven't had a chance to get back to yet.
Other very helpful sites/pages I've come across are:
Macrophotography by LordV - Brian "LordV" Valentine is one of the best macrophotographers in the world IMO.
No Cropping Zone - by John "Dalantech" Kimbler, another top macrophotographer and very helpful site.
They're the main ones that come to mind at the moment for me.